electronic eye controlled security system using ldr pdf

min project about electronic eye controlled security system
Electronic eye is also called magic eye. As the automation is emerging technology these days, just imagine a door bell that automatically rings when a person visit your home. This also provides security when any person is trying to enter into your home without your permission. Electronic eye is the electronic device that continuously watches if anyone is visiting your home. This article presents the circuit of electronic eye. Before going to know complete details about this circuit, get an idea about Light Activated Switch Circuit using LDR.

The project is designed as a security system based on photo sensing arrangement. It uses a 14- stage ripple carry binary counter to sense the light intensity through LDR. The output drives a buzzer and a relay for necessary action. This concept is very useful to deter burglars from banks, malls, jewellery stores and also in homes.

The system is based on an electronic eye: it is an LDR sensor, called light dependant resistor. When light falls on the sensor, its resistance drastically decreases which lead to triggering an alarm to alert the user.This system best suits in the application of providing friendly security system for cash boxes and lockers, which can be found in malls, jeweler shops, and banks.

The circuit is placed inside the cash box or locker in such a way that, when the burglar opens the locker and uses a torch light to find the valuables, the light falls on the circuit which contains an electronic eye (LDR) and gives a signal to the ripple counter. This activates the alarm, and indicates a burglary attempt. Also a lamp is used to indicate the theft when the light falls on the LDR.

Further the project can be enhanced by using a GSM modem and a microcontroller. Gsm modem can be interfaced to the microcontroller to send an SMS to the user in case of burglary.
please send downloaded PDF with no photos and all of electronic eye

Electronic eye is also called magic eye. As automation is the emerging technology these days, imagine a door bell that sounds automatically when a person visits your home. This also provides security when anyone is trying to enter your home without your permission. Electronic eye is the electronic device that continuously monitors if someone is visiting your home. This article presents the electronic eye circuit. Before knowing full details about this circuit, get an idea about the light-activated switch circuit with LDR.

Electronic Eye Controlled Safety System Circuit Principle:

The main principle of the circuit is to ring the door bell when there is anyone at the entrance. The light in the LDR determines whether a person is present or not. When there is an object in the input, LDR is in darkness and the buzzer starts to sound and the LED starts to glow.

Circuit Components:

1. 7805 regulator U1
2. Resistors R1, R2, R3, R4, R5-100k, 1k, 100, 22o, 820
3. 1N4007 diode D1
4. Capacitors C1, C2
5. BC 547 transistors Q1, Q2
6. Resistance to light
7. Buzzer BUZ1
8. Light emitting diode D2.
9. Bread board
10. Connection cables
11. DC 9V battery

The electronic eye safety control system was founded in 1997 and the base of operations in New Delhi. There are four types of organizations under these systems, namely electronic eye Pvt.Ltd, electronic eye systems, Indian institute of science and technology Mahamahi Exims. Electronic Eye creates a complete collection of high-tech surveillance and security products. These systems work on the integration of system and project implementation in the place of customers for numerous surveillance products.

Circuit diagram of the electronic safety system controlled by the eyes:

[Image: Electronic-Eye-Circuit-Diagram-768x262.jpg]

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